Abstract: A process for producing acetonitrile, the process comprising dehydrating a feedstock stream comprising acetonitrile, acrylonitrile, allyl alcohol, and water (and optionally methanol) in a dehydration (first) column to yield a dehydrated acetonitrile stream comprising acetonitrile and acrylonitrile, less than 1 wt % allyl alcohol, and less than 50 wt % water, and optionally hydrogen cyanide; distilling the dehydrated acetonitrile stream in a lights (second) column to yield a distillate stream comprising lights, and a bottoms stream comprising acetonitrile, acrylonitrile, water, and optionally hydrogen cyanide and acrylonitrile; extracting the distillation bottoms stream in an extraction (third) column to yield a raffinate stream comprising acetonitrile and less than 200 ppm acrylonitrile and an extract stream comprising water and acrylonitrile; purifying the raffinate stream to yield a product acetonitrile stream.

Abstract: An AM/AV fabric comprising base fibers comprising a base polymer composition and AM/AV fibers comprising an AM/AV polymer composition comprising an AM/AV polymer and an AM/AV compound. The base fibers and the AM/AV fibers are intermingled with one another; and the fabric demonstrates an Escherichia coli efficacy log reduction greater than 4.0, as measured in accordance with ASTM E3160 (2018) and a particle filtration efficiency greater than 35%.

Abstract: The present invention provides antimicrobial and/or antiviral properties for polymers and synthetic fibers that have stain resistant properties. The synthetic fiber comprises a polymer, such as a copolymer comprising from 85 to 99.5 percent by weight of a polyamide based on the total weight of the fiber and an aromatic sulfonate or a salt thereof present in a range from 0.5 to 10 percent by weight based on the total weight of the fiber, one or more metal compounds or ions thereof dispersed within the copolymer, and a phosphorus compound.

Abstract: A polyamide composition comprising from 25 wt % to 90 wt % of a first polyamide comprising a non-aromatic polyamide formed from 50 wt % to 90 wt % PA66; from 10-50 wt % of a second polyamide comprising a polyamide copolymer; from 0.01-10 wt % of a first stabilizer comprising a lanthanoid-based compound; from 0.01-10 wt % of a second stabilizer comprising a copper-based compound; and from 0-65 wt % filler.

Abstract: The present disclosure relates to fluid bed processes that utilize silica particles as a fluidization aid. The process comprises reacting one or more reactants in a reactor comprising a fluid bed to form a product. The fluid bed comprises a catalyst composition comprising a catalyst and an inert additive composition comprising silica particles from 0.5 wt % to 30 wt %, based on the total weight of the catalyst composition. The silica particles are discrete, inert particles that are mixed with the catalyst in the fluid bed.

Abstract: A nanofiber nonwoven product is disclosed which comprises a polyamide with a relative viscosity from 2 to 330, spun into nanofibers with an average diameter of less than 1000 nanometers (1 micron). In general, the inventive products are prepared by: (a) providing a polyamide composition, wherein the polyamide has a relative viscosity from 2 to 330; (b) melt spinning the polyamide composition into a plurality of nanofibers having an average fiber diameter of less than 1 micron, followed by (c) forming the nanofibers into the product.

Abstract: A wet treatment process, the process comprising: adding an article comprising a polymer and an initial zinc content to a wash solution comprising solute and a wash solution zinc content; maintaining the article in the wash solution for a wash time greater than 10 seconds to yield a washed article comprising a washed zinc content; wherein the washed zinc content is greater than the initial zinc content; and wherein the washed article demonstrates a Klebsiella pneumonia log reduction greater than 0.90, as determined via ISO20743:2013 and/or an Escherichia coli log reduction greater than 1.5, as determined via ASTM E3160 (2018).

Abstract: An adhesive composition comprising a first part comprising an epoxy resin and a second part comprising a multifunctional amine package. The multifunctional amine package comprises bis(hexamethylene)triamine and a synergist. The amine concentration is at least 10% less than the epoxy resin concentration and the adhesive composition demonstrates a sag resistance of greater than 40 mm.

Abstract: An antimicrobial film comprising antimicrobial film comprising from 50 wt % to 99.99 wt % of a polyamide composition, and from 10 wppm to 6000 wppm of zinc (and/or copper) dispersed within the film; wherein the film demonstrates: an antimicrobial efficacy to Staphylococcus aureus and Escherichia coli log reduction greater than 2.0, as determined by ISO 22196 (modified), and a slow rate puncture resistance greater than 1.5 N/?m as measured according to ASTM F1306.

Abstract: Provided herein is a polymer composition comprising an aromatic polyamide comprising terephthalic units and isophthalic units or a 6T/DT copolymer and having an overall high aromaticity, with a heat stabilizer and/or a lubricant. The polymer composition demonstrates improved electrical performance in terms of volume resistivity and dielectric strength.

Abstract: A polyamide composition comprising a base polyamide and an elastomer concentrate comprising: 20-80 wt % of an elastomeric aliphatic polyether having a molecular weight ranging from 400-4000 g/mol; and 80-20 wt % of a concentrate polyamide. The polyamide composition has particular uses as a cable tie and demonstrates improved cold-temperature applications while maintaining high strength, good flammability rating, and excellent processability.

Abstract: Provided herein are polymer films including a polyamide composition of PA6 and PA66/6. The provided films are particularly useful as packaging materials as they exhibit improved toughness, e.g., puncture and impact resistance, relative to that of conventional films that include only PA6 as a polyamide component. Also provided are methods for making the provided films, and articles that include the provided films.

Abstract: Nonwoven multilayer structures having at least two nanofiber layers are described herein. The nonwoven multilayer structure may have two nanofibers layers that have different properties from each other, such as fiber diameter. One nanofiber layer may be produced by an electrospinning process, while another nanofiber layer may be produced by a melt blown process.

Abstract: Provided is a textile made of filament yarn comprising a polymer composition that is durable and reusable having permanent or near-permanent antiviral properties and that includes a polymer, a metal ion, preferably a zinc and/or copper ion, and an optional phosphorus compound, wherein fibers and/or fabric formed from the polymer composition demonstrate antiviral properties and wherein the polymer is hygroscopic. The present disclosure also describes methods of forming the polymer compositions and methods of preparing fibers from the polymer composition.

Abstract: Polyamide resin that comprise one or more polyamides and a stabilizer component containing an copper complex and a copper salt is disclosed for improving the heat age performance for an article. The combination of a copper complex and a copper salt retains the mechanical properties of the article.

Abstract: An AM/AV material, comprising a topsheet layer comprising fibers comprising a topsheet polymer composition, a backsheet layer comprising fibers comprising a backsheet polymer composition; and an absorbent core configured therebetween, wherein the fibers of at least one of the layers, e.g., the topsheet layer, comprise an AM/AV compound, and wherein the fibers of the topsheet layer demonstrate a rewet value less than 5 g after a first water application and/or a Staph aureus efficacy log reduction greater than 2.6, as measured in accordance with ISO 20743:2013.

Abstract: An antimicrobial conveyor belt apparatus comprising multiple segments each having a body portion and interlocking fingers extending from the body portion. The segments comprise a polymer composition comprising from 50 wt. % to 99.9 wt. % of a polymer, from 0.01 wt % to 10 wt % zinc, optionally from a zinc compound, less than 1 wt % of a phosphorus compound, and from 0 wt % to 20 wt % molding additives. The conveyor belt apparatus (or the segments thereof) demonstrates a Staphylococcus aureus log reduction greater than 1.0, as determined via ISO 22196:2011.

Abstract: The present disclosure relates to polymer resins, fibers, and yarns with permanent antimicrobial activity, and a method of producing the same. In one embodiment, the antimicrobial polymer resin comprises a polymer having less than 2500 ppm of zinc dispersed within the polymer, less than 1000 ppm of phosphorus, wherein the weight ratio of zinc to phosphorus is at least 1.3:1 or less than 0.64:1.

Abstract: A nanofiber nonwoven product is disclosed which comprises a polyamide with a relative viscosity from 2 to 330, spun into nanofibers with an average diameter of less than 1000 nanometers (1 micron). In general, the inventive products are prepared by: (a) providing a polyamide composition, wherein the polyamide has a relative viscosity from 2 to 330; (b) melt spinning the polyamide composition into a plurality of nanofibers having an average fiber diameter of less than 1 micron, followed by (c) forming the nanofibers into the product.

Abstract: A cleaning composition having an aqueous solutions containing amino carboxylic acid chelators comprising (a) trans-1,2-diaminocyclohexane-N,N,N?,N?-tetraacetic acid monohydrate or salt thereof or (b) iminodiacetic acid or salt thereof may be used as an alternative for phosphates, NTA, and/or EDTA. The cleaning composition is used in industrial, commercial, or residential settings.